Traverse mechanism for winding machines



Oct. 14, 1941-. P. E. CHAPMAN 2,2 9 9 TRAVERSE MECHANISM FOR WINDING MACHINES Filed Feb. 6, 1939 Till /I Patented Oct. 14, 1941 UNITED STATES PATENT OFFICE 2,259,291 TRAVERSE MECHANISM FOR WINDING 'MACHINES Penrose E. Chapman, St. Louis, Mo. Application Februaryfi, 1939, Serial No. 254,809 I 12 Claims. (can-59) a pair of spaced friction discs, constituting the driving elements, and a'driven element in the form of a wheel or roller oscillatably mounted between said driving elements for alternative engagement therewith. The power to cause the automatic oscillation of the driven wheel and consequent reversal of the traverse is derived through a reversing friction gearing comprising.

proximately on the plane indicated by the line 5-5 of Fig. 3, looking down.

I The essential elements of the 'priormachine, which are designated by the same reference characters as in said Patent No; 2,186,820, may be briefly described as comprising an electric or other motor I I driving a shaft In, which through suitable change speed gearing (not shown) drives a vertical spindle l9 carrying the spaced driving discs and 2| between which is positioned the driven wheel or roller 25. The said wheel is carried bya shaft 26 journaled in bearings 21 and 55 which aremounted to provide for vertical oscillatory movements of the shaft whereby the .wheel 25 may be brought alternativel y into engagement with the discs 20 and 2|.

The shaft 26 is provided with a threaded sleeve or quill 3| which'is, engaged by thetraverse nut through the said wheel itself, but this is objec-.

tionable in some instances, and the primary object of the present invention is to provide means whereby the power necessary to shift the wheel into alternate engagement with the discs to reverse the traverse is secured elsewhere than through the reversing drive.

With the above and other objectsin view.

which will appear as the description proceeds,

the invention consists in the novel details of construction and in the novel combinations and arrangements of parts, more fully hereinafter disclosed and particularly pointed out in the appended claims.

Referring to the accompanying drawing form- V ing a part of this specification, in which like reference characters designate, like parts in all the views:

Figure 1 is a perspective view, partly diagrammade and partly insection, illustrating the essential elements of a coil winding machine of the type disclosed in my said prior patent, including the friction disc and roller reversing drive, with roller shifting mechanism constructed in accordance with the present invention applied thereto;

Fig. 2 is a verticalsectional, viewsthrough the mechanismv constituting the invention, for oscillating the drivenffriction wheel to secure reversal of the traverse;

Fig. 3 is a vertical sectional-view at right angles to Fig. 2, taken approximately on theplane indicated by the line 3-3 of said figure, looking in the direction of the arrows;

{I of the traverse carriage 40, to which is secured the traverse bar v45. The bar 45. carries a she'aye 49 which guides the wire or strand 50 to the coil 5|, all as will be clear from Fig. l.

The bearing 21 is carried by a link 69 (Figs. 2, 3 and 4) which is supported by a pair of spring arms 66 and 66' which arms constitute one element of a bell crank assembly, the other elements of which comrpise the rock shaft 65 and arm ll. Adjustable stop nuts 6| and BI are mounted on a threaded shipper rod 60 and are engageable by a projection on the traverse carriage 40 to pro- A trative purposes I have shown it as being derived I from the motor ll through shaft l0, sprocket I2,

Fig. 4 is a top plan view of certain of the parts shown in Fig. 2; and 1 Fig. 5is a horizontal sectional view, taken apchain It and sprocket. I03, although obviously other drives may be .employed. g

A cam 9| is mounted upon-the 'countershaft in juxtaposition with the lower end of a pivotally mounted camfollower 92. Thesaid lower end of the follower is'disposed at an angle to the body thereof, as clearly shown in Figs. 1 and 2,

and is apertured to provide the upper and lower cam-engaging faces 93 and 94 respectively, see Fig. 3, which faces are adapted to be alternately alined with the cam 9| as the follower is swun upon its pivot 95. When the follower is in the full line position shown in Fig. 2 the face 93 will withthe cam and rotation thereof will lower the 5' follower.

Swinging of the follower between the two positions is accomplished automatically by means of .the shipper rod 60 through the medium of the spaced pins I02 carried by the extension 90' of said rod, one to either side of the follower, it being understood that the said rod is moved longitudinally at the end of each traverse through engagement of the carriage 40 with the nuts 6| and 6|, as in my prior Patent No. 2,186,820. 1 The pivot 95 of the follower 92 is disposed between the free end portions of a. pair of leaf springs I00, theother ends of which are rigidly secured to the rock shaft 65, see Figs. 2 and 4; and by reason of the fact that at the time of the g0 raising or lowering of the follower 92 by the cam 9|, the said rock shaft is held against oscillation through the engagement of the lower end of the J bell crank arm 1| with one of the grooves in trigger 63, such raising and lowering movements of the follower 92 will, through its pivot 95, .place one or the other of the springs I00 under tension In order to provide a latch or look for the springs I00 and thereby prevent loss of their ends of the pivot pin 95 of a conical or any other hump like cross-section as is shown in Fig. 2

' and arrange that they engage the humps 96 carried by the chimney like housing 91 as they travel up or down. The movable humps on this pin 95 are held in place against the face of'the housing and the'humps V6 by any suitable means as the pair of U springs 99.

, From the above construction it can be seen that as the cam follower 92 is. moved either up or '40 down its pivot pin 95 will be compelled to climb never the humps 96 and will be retained on whatever side of Ithe said humps it happens to be by the pressure of the springs 98.

In order that the cam 9| may not be constantly clicking against the cam follower 92 when the follower is at rest I proportion the humps 96 so that by the time the pivot pin 95 has slid all the way down either side of. the said humps it will have traveled under the influence of springs 99 a slightly greater distance than the throw of the. cam 9 I.

Feed control, tripping or reversing action including elements 60, 62, 63, II may be exactly the same as ,in the said previous patent. connecting springs I00 in this application how- 'ever replace the helical springs I3 and I3 and do their work. The improvement in this invention lies in the fact that the springs I00 are tensioned directly from the source of power and 50 not by the roller 25 as are the helical springs I3, I3 in the previous invention.

If the follower 92 were moved slowly from one side to the other in time the cam 9| would strike the. faces93 or 94 on their corners,'occasionally failing to function, and would wear-badly. To prevent this I provide some formof snap action such that when the said follower p'asses its center line it will instantlysnapsquarely across the cam 9| and be operatedther-eby without mishap or excessive wear. One of the many useful forms of snap action is shown by the double bevel I03 on the edge of the follower 92 over which the conically faced spring- I04 travels. I

The 55 The operation of the improved traverse mecha nism will be clear from the foregoing, but may be briefly summarized as follows:

Assuming the parts to be in the positions illustrated in Fig. 2 and that the tra erse is moving from left to right, when the promotion on the carriage engages the stop nut 6| the shipper raise the trigger and engage the lower end of the bell-crank arm 'II in the left hand groove therefor, thus locking the bell crank assembly against movement. As this occurs the left hand pin I02 will move the cam follower 92 toward the right and the spring I04 and bevel I09 will complete the followers movement to the broken line position with a snap action, as above described. In this position the cam engaging surface 94 of the follower will be alined with the cam 9|, which is rotating constantly and the follower will be immediately lowered by the cam, its pivot 95 ridin over the humps 96 and placing the lower spring I00 under tension, since the rock shaft 65 can not move by reason of the engagement between the arm II and trigger 63. The drive between the disc 2| and the wheel or roller 25 has not as yet been broken and the traverse toward the right tension'as the cam 9| recedes, I may make the 30 the rock shaft to move counterclockwise under the influence of the energy stored in the stressed spring I00, which movement is transmitted through the spring arms 66 and 6| to link 69 and bearing 21, thus lowering the shaft 26 and shifting the wheel 25 into engagement with the disc 20. This of course reverses the traverse, and the same cycle will be gone through when the carriage 40 engages the stop nut 6|, except that the motion of the elements 60, 62, 92, 95, will be reversed, thereby stressing the upper spring I 00 which in turn will move the parts II, 65, 66, 69. 21, 26 and 25 in the reverse direction.

It is of course necessary that I use a definite physical structure to reveal .my invention but many other structures can be used that would also embody my invention. Therefore I do not wish to limit myself to the exact physical structure nor mechanical details shown except as may be required by the appended claims.

What I claim is:

'1..In traverse mechanism for a winding machine, said mechanism including a reversible drive comprising driving and driven elements, and means for moving-at leastone of said elements to reverse the drive, the combination of a cam; a follower operable by said cam; a spring connection between said follower and said elementmoving means; andmeans independent of said driven element for actuating said cam to cause the follower to stress said spring connection as a preliminary to the movement of said element for reversing purposes.

'2. In traverse mechanism for a winding machine, said mechanism including a traverse carriage, a reversible drive therefor comprising drivtion between said followerandsaid elementmoving means; means for shifting said follower between its said two positions in timed relation connection as a preliminary to movement of said element in either direction to reverse the drive.

3-. In traverse mechanism for a winding machine, said mechanism including a traverse carriage, a reversible drive therefor comprising driving and driven elements, and means for movin at least one of said elements in opposite directions to reverse the drive, the combination of a cam; a follower mounted for both longitudinal and lateral movements, the lateral movements being between two positions in each of which the follower is operable by said cam in one longitudinal direction only; means for shifting said follower between its lateral positions in timed drive comprislngdriving and driven elements,

means for moving at least. one of said elements to reverse the drive, and means for temporarily restraining said moving means, the combination of a cam; a follower mounted for. longitudinal re- 'ciprocating and lateral swinging movements, said lateral movements being between two positions in each of which the. follower is operable by said relation to the traverse of the carriage; a spring connection between said follower and the element-moving means; and means independent of said driven element for actuating said cam to cause it to move said follower longitudinally, whereby to stress the spring connection as a preliminary to movement of the drive element in either direction to reverse the drive.

4. In traverse mechanism for a windingmachine, said mechanism including a traverse carriage, a reversible drive therefor comprising driving and driven elements, means for moving at I least one of said elements in opposite directions to reverse the drive, and means for temporarily restraining 'said element-moving means, the combination of a cam; a follower mounted for both longitudinal and lateral movements, the lateral movements being between two positions in each ofwhich the follower is operable by said camin one longitudinal direction only; a spring connection between said follower and the element-moving means; means for shifting said follower between its lateral positions and for releasing the element-moving "means from its restraint, in timed relation to the traverse of said carriage; and means independent of said driven elementfor actuating said cam to cause it to move said follower longitudinally during restraint of said element-moving means arid thereby stress said spring connection, whereby the element-moving means will be moved to reverse the drive by the energy stored in said connection upon release of said restraint.

5. In traverse mechanism for a winding'ma- I chine, said mechanism including a reversible straining said moving means, the combination of a cam; a follower mounted for longitudinal r'e--v ciprocating and lateral swinging movements, said lateral movements being between two positionsin each of which the follower is operable by said cam in one longitudinal direction only; aspring connection between said follower and said element-moving. means; means for shifting said follower between its lateral positions prior to the conclusion of a traverse; and means for actuating said cam to cause the follower to stresssaid spring connection during the'restraint of said moving means, whereby the latter may be moved to reverse the drive by-the energy stored in said. connection upon release of the restraint. 5 6. In traverse mechanism ,for a winding machine, said mechanism including a reversible Z5 earn in one longitudinal direction only; a spring connection between said follower and said element-moving means; means for shifting said follower between its lateral positions priorto. the conslusion of a traverse; means for actuating said cam to cause the follower to stress said\ spring connection during the restraint of said moving means, wherebythe latter may be moved to reverse the drive bythe energy stored in said connection upon release of the restraint; and means for restraining reverse longitudinal movement of the follower while said connection is stressed.

7. In traverse mechanism for a, winding machine, said mechanism including a reversible drive comprising driving and driven elements. means for moving at least one of said elements to reverse the drive, and means for temporarily restraining said moving means, the combination of a cam; a follower pivotally mounted for lateral swinging movements, said follower and pivot being also mounted for longitudinal reciprocation, said lateral swinging movements being between two positions in each of which the follower is operable by the cam in one longitudinal direction only; a spring connection between the follower ing the follower between its lateral positions at approximately the conclusion of a traverse; 1

means for actuating said cam to cause the follower to stress said spring connection during the restraint of the element-moving means, whereby the latter may be moved to reverse the drive by the energy stored in said connection upon release of the restraint; and a detent co-acting with the follower pivot for preventing reverse longitudinal movement of the follower while said con nectionis stressed.

8. In traverse mechanism for a winding machine, said mechanismincluding a reversible drive comprising driving and driven elements, and means for moving at least one of said elements to'rev erse the drive, the combination of acam; a follower mounted for both longitudinal reciprocating and lateral swinging movements, said lateral movements being between two positions in each of which the follower is operable by said cam in one longitudinal direction only; a spring connection between said follower and said element-moving means; means for initiating the lateral movements of said follower at approximately the conclusion of a traverse; means for complteing said ateral movements with a snap action; and means for actuating said cam to cause the follower to stress said spring connection as a preliminary to the movement of said elemerit-moving means.

9. In traverse mechanism for a winding machine, said mechanism including a reversible 1 drive comprising driving and driven elements, and means for moving at least one of said elements to reverse the drive, the combination of a rotatable cam; a follower for said cam mounted for both longitudinal and lateral movements, said follower having out-of-line clam engaging surfaces; a spring connection between said follower and said element-moving means; and means for moving said follower laterally to alternatively to reverse the drive, thecombination of a rotatable cam; 'a follower for said cam mounted for longitudinal reciprocating and lateral swinging movements, said follower having an angularly disposed portion provided with an aperture for receiving said cam which aperture provides spaced cam-engaging surfaces only one of which may be alined with the cam at a time; a' spring connection between said follower and said ele-) ment-moving means; and means for moving said follower laterally to alternatively aline its camengaging surfaces with the cam, whereby the latter may impart longitudinal movement to the follower to stress said spring connection as a preliminary to the movement of said element-moving means.

11. A cam follower for the, traverse mechanism of a winding machine, comprising a body portion having means whereby it may be mounted for longitudinal reciprocating and lateral swinging movements, said body portion having an angularlydisposed extension provided with a cam receiving aperture, which aperture provides spaced cam-engaging surfaces only one of which may be alined with the cam at a time.

12. A cam follower for the traverse mechanism of a winding machine, comprising a body portion having means whereby it may be mounted forlongitudinal reciprocating and lateral swinging movements, said body portion having an angularly disposed extension provided with a cam receiving aperture, which aperture provides spaced cam-engaging surfaces only one of which may be 20 alined with the cam at a time, said body portion also having a beveled surface for co-bperation with a snap-actionelement.

PENROSE E. CHAPMAN. 

